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Hallar el valor de Xa. 2x+ 9 = x − 8b. x − 8 = x + 2c. 7x = x + 5d. 6 − 2x = 7x + 9e. x = 8 + xf. 7x − 4 = 2xg. 8 + x = −5xh. x = 5 − 2xi. 7x + 3 = x − 6j. x − 8x = 6​

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Answer:

a. x = -17

b. no tiene solución

c. x = 5/6

d. x = 3/9

e. no tiene solución

f. x = 4/5

g. x = -8/6

h. x = 5/3

i. x = -9/6

j. x = -6/7

a. 2x+ 9 = x − 8

2x-x=-8-9

x=-17

b. x − 8 = x + 2

x-x=2+8

0x=10 → no tiene solución

c. 7x = x + 5

7x-x=+5

6x=5

x=5/6

d. 6 − 2x = 7x + 9

-2x-7x=+9-6

-9x=3

-x=3/9

x=3/9

e. x = 8 + x

x-x=8

0x=8 → no tiene solución

f. 7x − 4 = 2x

7x-2x=4

5x=4

x=4/5

g. 8 + x = −5x

x+5x=-8

6x=-8

x=-8/6

h. x = 5 − 2x

x+2x=5

3x=5

x=5/3

i. 7x + 3 = x − 6

7x-x=-6-3

6x=-9

x=-9/6

j. x − 8x = 6

-7x=6

-x=6/7

x=-6/7

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